Power-transmission mechanism.



W. H; HUNT. POWER TRANSMISSION MECHANEM. A PPLIOATION FILED MAY 13, IQLZ.

1,048,076. Paienfied nec.-24, 1912.

tinrrnn STATES PATENT OFFICE.

WILLIAM H. HUNT, OF NATIONAL CITY, CALIFORNIA.

* POXVER-TRANSMISSION MECHANISM.

emons.

Specification of Letters Patent.

Patented Dec. 24, 1912.

Application filed May 13, 1912-. Serial No. 696,889.

To all whom. it may concern: a

e it known that l, f1mamHal-HINT, a (.lllZtll of the lT11ltt(l,StilttS, and a resident.

oil. National .ity. in the county of San Diego 0 and bltate oi California. have invented cor tain new and useful Improvementsin Power- 'lransmission Mechanisms, of which the following is a specification.

My invention relates to power transmission mechanisms and more particularly to those used in connection with automobiles.

- and the objects of my invention are. first",

to provide a transmission mechanism so rranged that the gearings are provided with hearings set a snllicient distance apart to lltlltt the gearings st able and to provide a maximum bearing surface, second. to provide such a mechanism in which the driving gear and the gear with which it meshes and the shit'tahle gears are the onlvones running when the transmission neutral.

and the engine is running idle. third, to provide a compact form f power transmission mechanism, and fourth, to provide a simple, durable. efiicient and easily lubricated power transmission mechanism.

With these and other objects in View as will appear. my invention consists of certain novel features of construction. combination and arrangenwnt of parts. will be hereinafter described in detail. and particularly set forth in the appended elaims reterence 9 with its gears 10 11, 1-2, and 1?), and difterential mechanism 14, constitute the principal parts of my transmission mechanism.

The driving gear 1 is secured to the driving shaft 2. which is mounted on ball bearings *2, in the casing 3. Revolubly mounted on the main shaft 4: is a bevel gear 5. meshing with gear 1. The elongated hobo of gear 5 is mounted in a ball bearing 5 in the hub of the'constant mesh spur gear 6. The other end of said hub is mounted in the ball bearing 5 in casing 3. Slidably mounted, on the elongated huh 5 and adapted to revolve therewlth are the shiftable gears 7 and S. n'ovidcd with grooves 7 and 8 adapted to facilitatethe shifting of the same by the ordinary means. Parallel to the shaft: 4. is a conntershaft 9 mounted in the ball bearings 9 and 9 in the casing and it is provided with spur gears 10, 1 1, 12 and 13, which are of various sizes. The gears 11 and 12 are' adapted to mesh with the gears 7 and 8 when in certain relative positions. The gear 10 is eonstantlv in Jncsh with the gear (3. The

gear 13-. is in constant mesh with a gear 13.

which is mounted on a separate bearing and is adapted to mesh with gear 7 for the purpose ot reversing the direction of the rotation of the main shaft t. The gear 0 is rigidly secured to the extended hub of the ditterentra] mechanism 14. and is mounted. in a ball bearing 6. la the huh of said gear 6 is provided an internal gear ti". adapted. to engage with the gear 3 and form a clutch tor the purpose of driving the shaft 4- directly by means of the bevel gear The opposite end at said differential mechanism is mounted. in the. ball bearing l-t. The differential mechanism 14. except. as to its attachment to the gear 6, is the same as is ordinarily in use.

It is obvious that with this construction and arrangement. there is provided a power transmission mechanism, so constructed and arranged. that the principal gears are provided with large bearing surfaces. and that; their hearings are a sutlicient distance apart to make them stable: that when the tansmission mechanism is in the neutral. only the gear meshing with the driving gear and the shittablc. gems are necessar ly in motion;

that the. mechanism is compact. and the parts are all adapted for eiiieicnt lubrication; that the shaft 2 hemg driven by any power Will rotate the driving gear 1 secured thereto,

the bevel gear 5 in mesh therewith. and the shittahle gears 7 and 8; that. when in the relative positions as shown in the figure. gear 9 will rotate gear 11, carrying with it shaft.

5 that ear 10 being secured on same shaft.

it will rotate gear 6, carrying with it the 'ditl'ercntial mechanism and the main shaft- 4: that. the shaft 4 maybe driven at various speeds relatively to the rotations of shaft 2,

and that the direction of therotation of the l '1;

shaft 4 may be reversed by the shifting of gears 7 and 8.

3. A power transmission mechanism, com

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A power transmission mechanism, comprisi a two piece main shaft, a differential ineehu. ism mounted at the junction of theadjaeent ends of said main shaft, a counter shaft mounted parallel with said main shaft, a bevel gear revolubly mounted on said main shaft provided with an extended hub, a plurality of shiftable gears mounted on said hub, a gear rigidly mounted on. one member of said differential mechanism provided with an internal gear adapted for the teeth of one of said shiftable gearsin one side thereof, a plurality of gears rigidly mounted on saidcounter shaft adapted to engage with i said sh-iftable gears when in the proper relative positions, a drive gear adapted to mesh with said bevel gear, and a drive shaft upon which said drive gear is mounted.

2. A power transmission mechanism, comprising a two piece main s haft,'a differential mechanism mounted at the junction of the adjacent ends of said main shaft,a countershaft mounted parallel with said main shaft, a bevel gear revolubly mounted on said main shaft provided with an extended hub, ball bearings supporting said extended hub, a plurality of shiftable gears mounted on said extended gear hub. a gearmounted on a member of said differential mechanism pro vided with a clutch member in one side thereofadapted to engage with the teeth of one of said shiftable gears, ball bearings between it and said extended hub, a plurality of gears rigidly mounted on said countershaft adapted to engage with said shiftablo gears when in the proper relative positions, a drive gear adapted to mesh with said bevel gear, a gear on' said counter-shaft inconstant mesh with the gear on said differential member, and adrive shaft upon which said drive gear is mounted.

prising a two piece main shaft, the pieces placed end to end, a differential mechanism mounted at the junction of the adjacent ends of said main shaft, a eounte r shaft mounted parallel with said main shaft, a plurality of various sized gear members mounted thereon, a bevel gear revolubly mounted on said main shaft, provided with'an extended hub journaled at eachend in ball bearings, a

- plurality of shiftable gears mounted'on said hub, a gear-adapted for constant mesh with one of the gear members on sa d countershart mounted on a member of said diiferen' tial mechanism provided with a clutch member in one side thereof, ball bearings on the other side thereof, a drive gear adapted to mesh with said bevel gear, a drive shaft upon which said drive gear is mounted and a casing provided with ball beari ngsupports for all the shaft journals inelosing said mechanism.

* 4. A power transmission mechanism comprising a mam shaft composed of two PIQCCS ball bearings at each end, a plurality of shiftable gears mounted on said hub adapted to engage with a portion of said gear members when in certain relative'positions,

a gear mountedon a member of said differential mechan sm provided with a clutch memberv in one side thereof, adapted to engage with one of said shi table gears and form a clutch, adrive gear adapted to mesh with said bevel gear, a drive shaft upon which said drive gear is mounted. a casing inclosing said mechanism and ball bearing supports for all journals in said mechanism.

5. In a power transmission mechanism the eon'ibination of a two piece main sha ft, a differential mechanism mounted at the junction of the adjacent ends of said main shaft, a countershaft mounted parallel with said main shaft, a plurality of gear members mounted thereon, a bevel gear provided with an extended hub revolublymounted on ball bearings around said main shaft, a plurality of shiftable gears mounted on said extended gear hub adapted to shift endwise thereon, a gear rigidly mounted on a member of said differential moehanisn'i provided with a clutch member in one side thereof adapted for one of said shiftable goals, a drive gear adapted to mesh with said bevel gear, a drive shaft upon which said drive gear is mounted, and a casing with two eompartments, the one for the differential meeh'anism and the other for the gearing.

In testimony whereof, T have hereunto change speed subscribed my name in the presence of two 

